feat: implement test route in main function for enhanced response

functions/data-sources/main.py

@@ -1,2 +1,6 @@
 def main(args):
+    route = args.get("route")
+    
+    if route == "test":
+        return {"status": "success", "text": "Text Test Success!"}
     return {"status": "success", "message": "Data sources endpoint is up!"}